Top: latitude/longitude and latitude/local time coverage maps of VIRTIS and IR2 images during the period of observation for both datasets. A greater number of images are shown for the southern hemisphere, particularly in regions between 60° and 90°S at 0°–45° and 195°–360° and slightly decreasing between both terminators. Bottom: latitude/longitude and latitude/local time maps of the percentage of wave occurrence within the number of images analysed..